Quote Originally Posted by luxlunae View Post
":Items
Account Bound Items
Many "Account Bound" heirlooms are now labeled as "Battle.net Account Bound", meaning that they can also be traded or mailed to characters that are on different World of Warcraft accounts under the same Battle.net account.
Mail sent to characters on the same Battle.net account now arrives instantaneously, as it does for the same World of Warcraft account.
Mailing account-bound items to characters of the opposite faction on the same Battle.net account will now correctly translate faction-specific items to their appropriate equivalent."

I'm finding this on MMO champion but not on the us battlenet patch notes for 4.1. Is it just a nasty trick?
Quote Originally Posted by F9thRet View Post
WoW insider reported it also, But it may have came from MMo Champ to begin with.

If so, this is awesome! I have so many Heirlooms scattered all over the place.

Stephen
???

http://us.battle.net/wow/en/blog/2356431#blog